The world was shocked when pictures appeared on Wednesday in US Weekly showing 22 year old Stewart locked in a passionate embrace with Rupert Sanders. That’s the director of Snow White and the Huntsman who is not only almost two decades her senior, at 41, but is also married and has two kids aged 7 and 5.

Rumours of the affair quickly spread like wildfire, accompanied by some cryptic tweets from Sanders’ wife, model Liberty Ross (who actually played Stewarts mother in Huntsman). Then, things took a further turn for the scandalous when the previously camera and interview shy Stewart released a public statement to People magazine admitting her infidelity and apologising to her co star.

The star had this to say: "I'm deeply sorry for the hurt and embarrassment I've caused to those close to me and everyone this has affected. This momentary indiscretion has jeopardized the most important thing in my life, the person I love and respect the most, Rob. I love him, I love him, I'm so sorry."

Sanders also commented: “I am utterly distraught about the pain I have caused my family. My beautiful wife and heavenly children are all I have in this world. I love them with all my heart. I am praying that we can get through this together."

It’s unusual for someone with such a high public profile to comment so quickly on something which appears in a tabloid but it’s a smart move from Stewart, giving her a chance to control the flow of information and avoiding the embarrassment of trying to deny it. But it’s hard to estimate the turmoil its set to cause – not least with already gestating sequel for Snow White but also the upcoming Twilight finale. There’s been no word from the Pattinson camp yet but a lengthy press tour with the two couldn’t help but be a little awkward.

More as we get it.

The Twilight Saga: Breaking Dawn – Part 2 is in cinemas from the 16th of November.